Pipe-coupling.



J. E. COSTA.

PIPE (IOUPLING.

APPLICATION FILED MAY 4, 1908.

94%?1 1. Patented Jan, 25, $1910.

attozmuao structed in accordance with the invention.

TT it edit, I?

ear on :m

ea n:

atria -construe.

hpplicatioii sat y. 1908; semi No, 430.771. 1

To all whom it may concern: i Be it known that l, Josnrn E. EosTA,'-a citizen of the United States, residing at Downey, in the county of Los Angeles and State of California, have inventedw a new and useful Pipe-Coupling, of iwhichithe following isa specification. V a

This invention relates to pipe couplings and has especial reference to high pressure unions. i

The invention has for its object to provide an improved high pressure union or coupling, which will form a tight joint, and prevent leakage, and which will stand any pressure, and can be rapidly connected and disconnected.

Referring to the drawing, Figure 1 is a vertical section of a pipe coupling con Fig. 2 is an= end view of the female section or member. Fig. 3 is an end view of the lock nut. Fig. i is a view of a cup washer in vertical section on a reduced scale.

The coupling is provided with the female section 1, formed with its inner sides 2, inclined or tapering inwardly toward its open end, and with the internal circumferential openings 3, and intervening slotted portions 4 at its open end, the slots in the portions 4 connect ng with the openings 3. A male section 5 having a tail piece 6, and an outwardly inclined spreader head 7,with inclined ground portion 7 is inserted in the section 1, and a cup shaped elastic washer 8 having a ring or circumferential flange 9 with inclined or beveled sides 10, is located aboutthe inclined s reader head 7, and between it, and the inc ined sides 2, of the section 1. A tubular lock nut 11 is mounted on the section 5, and has spaced of washer 8 by means of which the washer is held to the not. The ring 13 has one of its edges 14 formed at an incline or bevel to engage with the inclined side of the ring 9 of washer 8 and form an interlocking tight joint therewith; The nut 11 has its upper end formed with the inclined edge 15 which is adapted to bear against the inclined ground portion 7 of the head 7. Behind i l i l i thenut 11-, the tail piece 6 is provided with Specificationof Letters Patent. r ataflmaaamga,19w,

a threaded portion, withwwhich engages a correspondinglythreaded band or ring 17, adapted to bear against the lowerendofthe nut11. i 1 1 When the section 5 is inserted in section 1', thespreader head '7(, is located at the outer end of cup washer 8 and the nut 11 being in locked position, the head 7 is drawn down within the cup washer by turnin the band 17 which spreads the washer an forces it against the inclined walls 2, of the section 1, and against the lugs 12 of the nut 11. The washer 8 is normally straight as shown in Fig. 4:, which permits it to be moved into, and out of section 1 when the spreader head isat theouter end of the washer and when the spreader head is pulled into the washer it expands the latter, and leaves a portion of the washer extending above the spreader head and exposed to the pressure thereby in suring a tight joint. The ground joint provided betweenspreader head, and locknut,-

eifectually prevents leakage.

The partsof the joint are easil disconnected by unscrewing band 17, an pushing the tailpiece forward, which allows the cup shaped washer to come to an upright position. The lock nut is then turned to-release it from section 1.

, Bymeans of the construction and arrangement of parts herein set forth, the male and female members of the coupling may be securely locked together thus forming a practically air and water tight joint.

Having described the invention, I claim.

1. A pipe coupling consisting of a female section with inner tapering sides; a male section with a spreader head having tapering sides, a Washer having an internal annular flange, said washer being-clamped between the said head, and the female section; a nut having projections interlocking with the female section, and a ring engaging the flanged washer andjclainping it against said projections. i f

2. A pipe coupling consisting of a female section with tapering inner sides; a male section with a spreader head having tapering sides; a Washer with an internal annular flange, and a nut interlocking with the female section and having an adjustable ring engaging and clamping the flange of the section with spreader head, having outwardly tapering sides; a flanged washer clamped between said spreader head and-the female section; anut interlocking with the female section and engaging the flanged washer; and a rotary "threaded ring mounted on the tail ofthe male section and abutting against the nut. 3

4. A pipe coupling consisting of a female 10 section having inner inclined sides and shaped flanged washer ex anded spaced slots and openings at its open end; a male section having a spreader head with outwardly tapering sides, an elastic cup and clamped between said head all female secabutting against the nut.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

JOSEPH E. COSTA.

Witnesses:

R. L. Soo'rr, OWEN GALLAGHER. 

